public abstract class Expression.Function extends java.lang.Object implements Expression.Token
Modifier and Type | Field and Description |
---|---|
private java.lang.String |
name
Name of this function.
|
private int |
numParams
Number of parameters expected for this function.
|
Constructor and Description |
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Function(java.lang.String name,
int numParams)
Creates a new function with given name and parameter count.
|
Modifier and Type | Method and Description |
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abstract java.math.BigDecimal |
eval(java.util.List<java.math.BigDecimal> parameters)
Implementation for this function.
|
java.math.BigDecimal |
eval(java.util.Map<java.lang.String,java.lang.Object> variables,
java.util.List<java.lang.Object> parameters) |
java.lang.String |
getName() |
int |
getNumParams() |
java.lang.String |
toString() |
private java.lang.String name
private int numParams
public Function(java.lang.String name, int numParams)
name
- The name of the function.numParams
- The number of parameters for this function.public java.lang.String getName()
public int getNumParams()
public java.math.BigDecimal eval(java.util.Map<java.lang.String,java.lang.Object> variables, java.util.List<java.lang.Object> parameters)
public abstract java.math.BigDecimal eval(java.util.List<java.math.BigDecimal> parameters)
parameters
- Parameters will be passed by the expression evaluator as a
List
of BigDecimal
values.BigDecimal
value as a
computing result.public java.lang.String toString()
toString
in class java.lang.Object